Schizo (1976)

Samantha and Alan are getting married, but William Haskins isn't pleased. 

He grabs a train south to London and begins shadowing Samantha as she tries 

to get on with married life. Haskins' attempts to frighten her drive 

Samantha to desperation, but she's having trouble convincing anyone that 

she's being stalked. Even her psychiatrist dismisses her concerns as part 

of her neurosis. As bodies begin turning up, Samantha's story becomes more 

believable, and her dark secret from the past begins to reveal itself. 

(IMDB Ed Sutton) NV